Flour sifter



Sept. 18 1923. 1,468,454

. A. Z. BOSE FLOUR SIFTER Filed April 30. 1925 F/EE Patented Sept. 18,1923.

AUGUST Z. BOSE, OF WILLITS, CALIFORNIA.

FLOUR srrrnn.

Application filed April 30, 1923. 'Serial No. 635,488.

To all whom it may concern:

Be it known, that I, AUGUST Z. Bosn, a citizen" of the United States,residing at Nillits, in the county of Mendocino and State of California,have" invented new and useful Improvements in Flour Sifters, of whichthe following is a specification.

This invention relates to improvements in flour sitters and residesin'the provision of a simply constructed, compact and efficient deviceof" this nature which is arranged such that it may be taken apart forthe purpose of readily and easily cleaning the parts thereof and may beoperated without throw ing the flour out of the sitter.

An object of the invention i's to provide a sitter of the characterdescribed wherein the perforated bottom is close to the lower end of thesitter body and provision is made for the sitting of a greater quantityof flour than is the case with the ordinary sitter wherein theperforated bottom is spaced well upward from the lower end of the body.

Another object is to generally improve and simplify the construction andoperation of flour sitters so as to render them superior to the ordinarysitter by way of simplicity and compactness of arrangement, ease ofoperatiomstrength and durability.

With the above mentioned and other objects in view, the inventionconsists in the novel construction and combination of parts hereinafterdescribed, illustrated in the accompanying drawing, and set forth in theclaims hereto appended, it being understood that various changes in theform, proportion size and minor details of construction within the scopeof the claims may be resorted to without departing from the spirit orsacrificing any of the advantages of the invention.

Referring to the drawing:

Fig. 1 represents a side elevation of a sitter constructed in accordancewith my invention,

Fig. 2 represents a fragmentary vertical sectional view of the sitter.

Fig. 3 represents a horizontal section on line 38 ofFig. '1.

Referring in detail to the drawing where- 1 in one embodiment of theinvention is illusformed of some light, dust-proof metal and one side isprovided with the usual handle 2.1 Mounted at the lower end of the bodyportion is a concavo-convex screen 3, which is removably supported inthe lower end of the sitter and in view of its disposition at said lowerend provides for the sifterholding a greater quantity of flour than ispossible in sitters having the perforated walls spaced well inwardlyfrom the lower end. The screen 3 is provided at spaced points on itsperiphery with projections 4 adapted to engage in notches or slots 5extending up wardly from the lower edge of the body portion 1. Theseprojections .4: engage snugly in the notches and prevent turning of thescreen or rattling thereof but permit of ready removal of said screen.The screen is held in place by a pair of supporting rods 6 which extendacross opposite sides ofthe screen beneath the latter through openings 7and 8 provided in the body portion 1. The rods are provided at certainends with head portions 9 and at their otlierends are screw threaded asat 10 whereby nuts 11 may be turned on the threaded ends to hold therods in place. The arrangement issuch that the rods will be flexed andplaced under slight tension when in place in the openings 7 and 8, andengaged with the lower side of the screen whereby the screen will besecurely held in place. The preferable arrangement of the rods is toextend them from slightly spaced points on one side of the body portiondivergently to the other side of the body portion as shown particularlyin Fig. 3, whereby an adequate supporting of the screen will be providedfor. Extending upwardly from the center of the screen is a pin 12 onwhich the hub portion 13 of the agitator 14: is rotatably mounted. Theagitator comprises a plurality of tangentially extending arms 15 curvedto conform to the concavity of the screen and adapted to lie close tothe upper surface of the latter.

One of the arms 15 is bent as at 16 near its outer end and extendedthrough an arcuate slot 17 provided between the body portion and arecessed portion of the screen. After being thus extended the portion 16is extended outwardly to serve as a handle 18 there being provided inthe wall of the body portion an arcuate slot 19 through which theportion 18 extends. By grasping the handle 18 and moving it back andforth,

the agitator will be moved over the screen to cause the flour to sift inthe usual manner. The agitator of my invention and the screen are soconstructed and associated with one another and the body portion that inoperation the flour will not be thrown out of the top of the can butwill be effectively sifted through the screen.

When itis desired to clean the screen and its associated parts, it isonly necessarily to withdraw the rods 6 after removal of the nuts 11,and to allow the screen to drop out of the bottom of the body portion.It will thus be seen that the assembling of the parts may beexpeditiously ei'l'ected as well as the disassembling. V

By having the arcuate slots in the body portion or container 1 disposedbelow the plane of the screen and the slot between the screen and wallcomparatively narrow, the flour is, to a great extent, prevented frompassing out through the container slot during'the operation of thesitter.

I claim:

1. A flour sitter comprising a container having slots at the lower end,a screen removably mounted within the lower end of the container, aplurality of projections on the screen engaging in the slots andremovable supporting members extending across the lower end of thecontainer beneath and supporting said screen in place.

QJA. flour sitter comprising a container having slots at the lower end,a screen removably mounted within the lower end of the container, aplurality of projections on the screen engaging in the slots, removablesupporting members extending across the lower end of the containerbeneath and supporting said screen in place and an agitator mountedwithin the container close to the upper side of the screen.

A flour sitter comprising a container having slots at the lower end, ascreen removably mounted within the lower end of the container, aplurality of projections on movably mounted within the lower end of thecontainer, a plurality of projections on the screen engaging in theslots, removable supporting members extending across the lower end ofthe container beneath and supporting said screen in place, an agitatormounted within the container close to the upper side of the screen, saidcontainer having a slot adjacent its lower end and an extcnsion from theagitator slidably engaged in said slot, said slot being below the planeof the screen.

AUGUST Z. BOSE.

